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%I #7 Dec 04 2017 19:01:52
%S 1,4,16,44,64,176,256,444,704,1024,1776,1936,2816,4096,4444,7104,7744,
%T 11264,16384,17776,19536,28416,30976,44444,45056,65536,71104,78144,
%U 85184,113664,123904,177776,180224,195536,197136,262144,284416,312576
%N Numbers which can be expressed as the product of numbers made of only fours.
%C 64 = 4 * 4 * 4; 1936 = 44 * 44; 1776 = 4 * 444.
%Y Cf. A084034, A161140, A161141, A161143, A161144, A161145, A161146, A161147.
%K nonn,base
%O 1,2
%A _Claudio Meller_, Jun 03 2009
%E Corrected and extended by _Claudio Meller_, Jun 06 2009
%E Corrected and extended by _Claudio Meller_, Jun 27 2009
%E 1 added by _N. J. A. Sloane_, Dec 04 2017
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